Car-heating apparatus



No. 6I9,402. Patented Feb. I4, |899.. J. FBUMVELLER.

CAR HEATING APPARATUS.

(Application filed June 24, 1890.)

(No Modal.)

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JOSEPH FRUMVELLER, OF PULLMAN, ILLINOIS, ASSIGNOR TO THE PULLMANS PALACE CAR COMPANY, OE CHICAGO, ILLINOIS.

CAR-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 619,402, dated February v14, 1899.

Application tiled June 24,1890. Serial No. 356,519. (No model.)

To @ZZ whom it may concern.-

Be it known that I, JOSEPH FRUMVELLER, acitizen of the United States, residing at Pullman, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Car -Heating Apparatus, of which the following is a specification.

My invention relates generally to heaters -designed for cars, and more particularly to that class of car-heaters known as hot-water heaters.

The obj ect of my invention,generally stated, is to provide a heater of convenientsize capable of uniformly and successfully heating the longest cars in use and to provide a heater with efficient means for rapidly heating the water and causing it to circulate through the pipes with such rapidity that it' will return to the heater before parting with all of its heat.

To the attainment of these and other useful ends my invention comprises, in combination, a heater having aplurality of independent heating-coils arranged within the firechamber, with the convolutions of one coil arranged between those of the other, an expansion tank lor drum into'which the heated water is delivered from bothof said coils, and a plurality of circulating-pipes into which the heated water is delivered from the tank or drum, said pipes respectively extending to different parts of the car and returning separately to the lower ends of the heating-coils. Each circulating-pipe serves to heat one side of the car, and the circulation is shorter and more rapid than if a single circulating-pipe be employed.

My invention also comprises the combination,with a stove or furnace having a plurality of heating-coils which are joined at one end, of an expansion-drum having a single end in,- let and a single end outlet entering the drum horizontally and arranged in the same horizontal plane, said heating-coils being connected to said single inlet, and a plurality of circulating-coils connected to the drum-outlet and extending to dierent parts of the car and having their returns connected with the lower ends of the heating-coils. The advantage of this construction and combination of parts is that the heated water is delivered into the drum nearits bottom and the circulation of water through the drum is parallel to its longest axis and the water will pass in an unbroken column from inlet to outlet, said current being practically in a horizontal plane.

The invention further consists in other features embracing the particular form of connections between the tank or drum and the heating-coils and circulating-pipes.

In the accompanying drawings, Figure l is 6o a Vertical longitudinal section of the body of a car with a heater apparatus constructed in accordance with my invention applied thereto and shown in side elevation. Fig. 2 is a horizontal longitudinal section of the same, showing a top plan view of my improvements. Fig. 3 `is a vertical transverse section of a portion of the car and through the end portion thereof, showing my heating apparatus partly in side elevation and in section. Fig. 7o 4 is a side elevation of the end portion of a ear, partly broken away to show the heating apparatus, and showing also the location of the expansion-drum. Eig. 5 is a central vertical longitudinal section of the eXpansiondrum. Fig. 6 is a horizontal section of the expansion-drum, taken upon the line 6 6 of Fig. 5. Fig. 7 is a view through the same section of the drum on which Fig. 6 is taken, but showing a modified form of construction 8o embodying my invention.

It will be understood that in the drawings such parts only of the car are shown as are necessary to illustrate the application of my heating apparatus. v

Referring to said drawings, A indicates a car of familiar construction, having in one corner thereof in the usual manner a heaterroom A. It is desirable that said heaterroom should occupy as little space as possi- 9o ble, so as to give as much room as possible for the accommodation of travelers.

B indicates a heater or furnace located in said heater-room A'. The said heater, broadly considered, is constructed in the same manner as those now in general use, comprising a base or support Z9, a casing or body portion b', which incloses the tire-chamber, and a smoke jacket or flue b2, which leads from the upper end thereof and passes out through the roof of the car.

`Within the body b of the heater are located two coils of pipes C and O', the convolutions of which are alternately arranged. The general shape of said coils may be either cylindrical or slightly cone-shaped, although the latter is desirable and they are so illustrated. The said coils have substantially the same contour and size, so that the convolutions of each are of the same diameter and are arranged substantially in vertical alinement. The said coils are also intertwined, so that, havin g the same con tour and size, they necessarily stand in the same relation to the fire, and each has the same area of surface exposed thereto. For convenience said coil C willbe termed the upper coil and coil C the lower7 coil. At the top of the fire-chamber said coils pass out through the body or casing of the heater by means of the straight portions or ends ce. The two pipe endsc c' are connected with the expansion-drum D, and the latter is connected with the two outgoing pipes c2 c3, the outgoing pipe c2 being illustrated as located on the same side of the car with the heater B, while the outgoing pipe c3 is located on the other side of the ear, althoughit is obvious that they may be otherwise arranged. The said outgoing pipes lead to the parts of the car to be heated and may be provided with suitable branch pipes and coils, as maybe found convenient. Returnpipes c4 c5, forming continuations of the outgoing pipes c2 c3, respectively, lead back to the heater and are connected to the lower ends of the coils C and C', respectively,wl1ich have straight portions or ends c6 c7 projecting through the casing near the lower end of the hre-chamber.

It will be clearly understood that the outgoing and return pipes can be arranged in any manner found most desirable and convenient for heating the car.

The operation will be plainly obvious, it being similar generally to other hot-,water heaters. It will be observed, however, that the eonvolutions of the heater-coils stand at a greater incline than that at which such convolutions commonly stand-thatis to say, the coils are not wound closely with the convolutions in contact with each other, but are open, as shown, with the convolutions separated. In the drawings the distance between said convolutions is shown as equal to three times the diameterof the pipe, which, taken in connection with the diameter of the coils, gives a convenient inclination to the convolutions 5 but other inclines can be resorted to, as desired. By givingan inclination as described the flow of water is attained with greater regularity, it being noted that in hot-water heater-coils as commonly constructed there is a tendency on the part of the water to fiow back in the coil, occasioned by the slight inclination of the eonvolutions thereof.

A car heated by a system as above described is uniformly heated throughout, as both coils C and C stand in the same relation to the fire and are heated alike and force the same quantity of water through the pipes. Two systems of pipes being employed to heat the car, itis manifest that they are about one-half as long as the pipes in a car having a single system, so that the water returns to the heater in about one-half the time it otherwise would, and therefore retains more of its heat and serves to heat the car satisfactorily.

I have also combined with the heating-coils and circulating-pipes an expansion-drum D, through which the water passes on its way from the heating-coils to the circulatingpipes. Said drumD consists of a hollow cylindrical body having rounded or semispherical ends, and owing to its construction and arrangement a larger drum can be used, from which the water is expelled regularly and without breaking up the column of water therein. As shown in said drawings, the drum D is arranged upon its side-that is to say, with its longest axis horizontal-and at one end thereof I have shown two bosses d d. Said terminal bosses or inlet and outlet openings are located near the bottom of the drum and in the same horizontal plane. The said drum is also provided with a safety-valve D and a funnel and cock D2, by means of which the water can be poured into the drum and circulating-pipes, said valve and funnel being of ordinary construction. Itwill be noted that said drum is provided with one inlet and one outlet, and to permit the water from both coils to pass therethrough the pipe-sections C2 C2,which are connected with the upper ends c c of the coils, both lead into one pipe C3 by means of a joint or fitting o8, and said pipe C3 is connected with the boss or inlet CZ of the drum. To the boss or outlet d is joined a pipe C4, which terminates in a branch coupling ,09, to which latter the outgoing pipes c2 c3 are jointed. It will thus be seen that the system of circulating-pipes is complete in two sets except where they are joined to be commingled when passing through the drum.

The operation will be plainly obvious, it being understood that a suicient quantity of water is introduced through the drum to lill the circulating-pipes and also about half of said expansion-drum. When the water is forced into the drum from the coils, the current will pass along the bottom to the other end thereof, where it will turn and sweep along the other side to the outlet-opening and then into the outgoing pipes. Thus a continuous and steady iow is maintained through the expansion-drum, which consequently makes a better circulation in the pipes. By arranging the inlet and outlet horizontally all danger of the incoming water rising above the level of the water in the drum is avoided, so that the column of water is never broken.

Another advantage due to the form of drum is that a drum of proper size can be located upon the car, for it is observed that the pipe connections lie horizontally, so that it is not necessary to place the drum over the heaterroom, as when the feed and outlet are ver- IOO IIO

IIC

tical; but the drum can be placed as found most convenient. Thus a drum of any size can be used, so that any amount of force can be obtained. It will also be noticed that the circulation of the water is equalized by means of the branch fittings, so that both systems of pipes will be equally heated and the water circulated through the same with the same speed.

In Fig. 7 is shown a modified form of construction embodying my invention. In this construction the expansion-drum is provided at one end with an inlet or boss d, while the outlet d is at the opposite end thereof. The Water in passing through the drum takes a straight course, preserving the same unbroken continuous flow heretofore pointed out.

I claim as my invention-'- l. In a car-heater, the combination with a stove or furnace, of a plurality of independent heating-coils arranged within the iirechamber thereof, the coils being of the same size and the convolutions of one coil being arranged between those of the other, an eX- pansion-tank into which the heated Water is delivered from both of said coils and a plurality of circulating-pipes into which the heated wat-er is delivered from the tank, said pipes respectively extending to diderent parts 2. In a car-heater, the combination with a stove or furnace, of two independent heating-coils located therein, the convolutions of said coils being alternately arranged and standing in the same relation to the fire, two independent circulating or radiating pipes extending to different portions of the car and 4o respectively connected with the lower ends of said coils, a water-uniting fitting communicat- `ing with the upper ends of the coils, a Water dividing iittin g communicating with the independent radiators and an expansion-tank located between and communicating with said water-unitin g and water-dividing fittings,substantially as described.

3. In a car-heater the combination with a stove or furnace having a plurality of heat- 5o ing-coils which are joined at one end, an eX- pansion-drum having a single end inlet and a single end outlet entering the drum horizontally and arranged in the same horizontal plane, said heating-coils being connected to said single inlet and a plurality of circulating-coils connected to the drum-outlet and extending to different parts of the car and having their returns connected with the lower ends of the heating-coils, substantially as de- 6o scribed.

JOSEPHr FRUMVELLER.

Witnesses: y

HARRY COBB KENNEDY, CEAS. G. PAGE. 

